docs: add the remaining release steps for the Tauri port

TODO.md

@@ -0,0 +1,22 @@
+# TODO
+
+Steps left before the Tauri v2 port on `feat/tauri-port` can ship. Do them in
+order.
+
+1. **Create the updater signing key.** Run `npx tauri signer generate`, put the
+   public key in `plugins.updater.pubkey` in `tauri.conf.json`, add the
+   `TAURI_SIGNING_PRIVATE_KEY` and `TAURI_SIGNING_PRIVATE_KEY_PASSWORD`
+   repository secrets, and keep an offline backup of the key pair. Until then
+   the release workflow refuses to build and the app rejects every downloaded
+   update.
+2. **Test on Windows 10 and 11.** Download the exe artifact from the latest CI
+   run on `feat/tauri-port` and work through the checklist in
+   [the final port review](plans/reports/code-reviewer-261021-1028-tauri-port-final.md).
+   Check toast notifications first: a freshly downloaded exe may not show them.
+3. **Run the release dry run.** Follow the dry-run steps in
+   [docs/release-process.md](docs/release-process.md). It creates a draft
+   release and deletes it afterwards.
+4. **Merge into `main`.** This reaches production: the next tag publishes the
+   Tauri build to existing users through self-update.
+5. **Rename to `usage-monitor`.** Follow
+   [the rename plan](plans/261021-1226-rename-to-usage-monitor/plan.md).